It is not possible. Ooma does not provide customers access to their SIP credentials. I have the SIP phone that's in my avatar and would love to use it with my Ooma account. Every post I make serves as a reminder that some of us would like to have this capability.

There was a time when this was said to be in the service's future plans. We haven't heard anything about it lately.

Ooma customer since November 2009.Formerly employed at another VoIP company.My opinions are my own.

I discovered the Whistle Phone iPhone app. It's free and all you need is Wifi (or a SIP account) to get free long distance calls within the continental U.S., it does have ads but they aren't overwelming. You get a phone number that you can call out and receive from. Currently the number is randomly generated, so calls to you could be long distance for your callers but they are going to fix that with an update soon. I have also tried the free iCall app, but much more prefer Whistle Phone. Oh, this app doesn't have voicemail, but that's no problem because I have Google Voice for that.

DTMF wrote:It is not possible. Ooma does not provide customers access to their SIP credentials. I have the SIP phone that's in my avatar and would love to use it with my Ooma account. Every post I make serves as a reminder that some of us would like to have this capability.

There was a time when this was said to be in the service's future plans. We haven't heard anything about it lately.

At the moment, wifi apps allowing remote access to calling is a PREMIUM feature.. but nearly ALL ISP's already offer sip and/or web calling capabilities for FREE as a vlaue-added feature. However their service is about $30+ a month.. so, Ooma will probably get there. but it might take some time & customers nudging them, so +1 on some value added feature which is more generous, even if it's a premier feature.